When I started sw
I had a huge outbreak of ick. But I fixed that really quick with a diatom filter. Not only does it kill ick fast but also that dreaded brown algae you get when starting sw
. It's a great filter and I highly recommend it! It will kill any parasites in an aquarium (fresh or sw
) also any free floating algae. They are about $130. I got mine from ThatPetPlace.com. Hook up is easy just like a canister filter. You just have refill/recharge the filter with diatom powder every month or two. A great investment. Don't ever have to mess with chemicals again. Also it will not kill coralline algae.